You can risk it using Stealth multiMAN which is included in the download archives HERE, however, most warn it's at your own risk and to stay away from Activision / TreyArch servers including games such as Black Ops 2.

You can risk it using Stealth multiMAN which is included in the download archives HERE, however, most warn it's at your own risk and to stay away from Activision / TreyArch servers including games such as Black Ops 2.